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Feat: Several windows in one process, the Host's half (FR-53) - #370
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…nts 39 to 47, properties 150 to 168)
A Window widget (45), its properties and handlers (150 to 168), nine window events (39 to 47) and the SetWindowTheme and FocusWindow commands (23, 24). SetWindow carries the mode and the last-window policy in the spare bits of its resizable word, so a single-window application sends the bytes it always sent. Window size and zoom are kept per Window node, a window anywhere but under the root or a node moved between windows is a ProtocolError, and the Rust API gets LaunchBuilder::windows, on_last_window_closed, Window, current_window and the two root registrations. The Kotlin interpreter gets stand-in arms so the generated protocol compiles; the platform windows are the renderer's part. Generated files follow from CI.
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October 29, 2026 11:52
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The Rust and wire half of FR-53 for the desktop, for #355. The Kotlin renderer half (opening and closing platform windows, the events, the properties) follows in its own change.
Windowwidget, its properties and handlers, nine events,SetWindowThemeandFocusWindow;SetWindowcarries the mode and the last-window policy in the spare bits of its resizable word, so a single-window app sends the same bytes as before. The schema hash changes (FR-7).Windownode; a window anywhere but under the root, or a node moved between windows, is aProtocolError.LaunchBuilder::windows,on_last_window_closed,Window(on_close_request),current_window(),on_window_requested,on_application_reopen, andtear_off_key/on_window_drag_overonColumn,RowandBox.Generated files are regenerated from CI's artifact.